Yield and Characteristics of Pyrolysis Products Obtained from Schizochytrium limacinum under Different Temperature Regimes

Energies

Gang Li²  Yuguang Zhou¹  Fang Ji¹  Ying Liu¹  Benu Adhikari⁴  Li Tian³  Zonghu Ma³ 

[1] Key Laboratory of Clean Production and Utilization of Renewable Energy, Ministry of Agriculture, P.R. China, No. 17 Qinghua East Road, Haidian District, Beijing 100083, China;College of Water Resources and Civil Engineering, China Agricultural University, No. 17 Qinghua East Road, Haidian District, Beijing 100083, China; E-Mail:;China Huadian Engineering Co., Ltd., No. 273 Xizhimennei Avenue, Xicheng District, Beijing 100035, China; E-Mails:;School of Health Sciences, University of Ballarat, Mt. Helen, VIC 3353, Australia; E-Mail:

关键词: Schizochytrium limacinum;    microalgae;    pyrolysis products;    yield;    real-time determination;   

DOI  :  10.3390/en6073339

来源: mdpi

【 摘 要 】

Pyrolysis-gas chromatographic mass spectrometry (Py-GC/MS) was used to determine the yield and chemical composition of the pyrolysis products of Schizochytrium limacinum. The pyrolysis was carried out by varying the temperature from 300 °C to 800 °C. It was found that the main decomposition temperature of Schizochytrium limacinum was 428.16 °C, at which up to 66.5% of the mass was lost. A further 18.7% mass loss then occurred in a relatively slow pace until 760.2 °C due to complete decomposition of the ash content of Schizochytrium limacinum. The pyrolysis of Schizochytrium limacinum at 700 °C produced the maximum yield (67.7%) of pyrolysis products compared to 61.2% at 400 °C. While pollutants released at 700 °C (12.3%) was much higher than that of 400 °C (2.1%). Higher temperature will lead to more pollutant (nitrogen compounds and PAHs) release, which is harmful to the environment. Considering the reasonably high yield and minimum release of pollutants, a lower pyrolysis temperature (400 °C) was found to be optimum for producing biofuel from Schizochytrium limacinum.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.